This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Application Security Engineer based in Spain.
This is a senior application security opportunity within a globally distributed technology environment building products and infrastructure for the Web3 ecosystem.
You will help protect applications trusted by millions of users, with a particular focus on digital assets, identities, decentralized applications, and blockchain technology.
The role combines hands-on security engineering with threat modeling, secure design, vulnerability research, code reviews, and developer enablement.
You will work closely with engineering and product teams to embed security throughout the software development lifecycle rather than addressing vulnerabilities only after release.
Your work will directly influence the security posture, resilience, and trustworthiness of products operating at significant global scale.




You will also contribute to security automation and AI-powered tooling as vulnerability detection and remediation techniques continue to evolve.
This role is idóneo for a proactive senior security engineer who enjoys technical depth, high autonomy, and solving complex security challenges alongside experienced engineering teams.
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Accountabilities
Investigate vulnerabilities reported through the bug bounty program, determine their root cause and severity, and assess the appropriate remediation path.
Collaborate with ethical hackers to triage security reports and work directly with product and engineering teams to resolve identified vulnerabilities.
Document vulnerabilities clearly and precisely so engineering teams can understand, prioritize, and remediate issues efficiently.
Write production-quality code to support security engineering initiatives and remediate vulnerabilities across client applications.
Develop and contribute to AI-powered security tooling that supports vulnerability analysis,

📌 Senior Application Security Engineer (España)
🏢 Jobgether
📍 España